base-4.2.0.0: Basic librariesSource codeContentsIndex
Data.Bool
Portabilityportable
Stabilityexperimental
Maintainerlibraries@haskell.org
Contents
Booleans
Operations
Description
The Bool type and related functions.
Synopsis
data Bool
= False
| True
(&&) :: Bool -> Bool -> Bool
(||) :: Bool -> Bool -> Bool
not :: Bool -> Bool
otherwise :: Bool
Booleans
data Bool Source
Constructors
False
True
show/hide Instances
Operations
(&&) :: Bool -> Bool -> BoolSource
Boolean "and"
(||) :: Bool -> Bool -> BoolSource
Boolean "or"
not :: Bool -> BoolSource
Boolean "not"
otherwise :: BoolSource

otherwise is defined as the value True. It helps to make guards more readable. eg. 

  f x | x < 0     = ...
      | otherwise = ...
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